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TPS548B22

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1.5V to 18V Input, 25A SWIFT™ Synchronous Step-Down Converter with Differential Remote Sense

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1.5V to 18V Input, 25A SWIFT™ Synchronous Step-Down Converter with Differential Remote Sense

TPS548B22

ACTIVE
Data sheet Order now

Product details

Parameters

Vin (Min) (V) 1.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 25 Iq (Typ) (mA) 2 Switching frequency (Min) (kHz) 425 Switching frequency (Max) (kHz) 1050 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Differential Remote Sense, Forced PWM, Over Current Protection, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

LQFN-CLIP (RVF) 40 35 mm² 7 x 5 open-in-new Find other Buck converters (integrated switch)

Features

  • Conversion Input Voltage Range (PVIN): 1.5 V to 18 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 4.1-mΩ and 1.9-mΩ Power MOSFETs With 25-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop to Support Large Bulk Capacitors and/or Small MLCCs Without External Compensation
  • Adaptive On-Time Control With 4 Selectable Frequency Settings: 425 kHz, 650 kHz, 875 kHz and 1.05 MHz
  • Temperature Compensated and with Programmable Positive and Negative Current Limit and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN Hysteresis
  • Prebias Start-up Support
  • Eco-Mode and FCCM Selectable
  • Full Suite of Fault Protection and PGOOD
  • 7 mm × 5 mm × 1.5 mm, 40-Pin, Stack Clipped LQFN-CLIP Package

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Description

The TPS548B22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count, and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-side on-resistance of 4.1 mΩ and a low-side on-resistance of 1.9 mΩ. The device also features accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, output voltage setpoint accuracy, auto-skip or FCCM mode operation, and internal soft-start control.

The TPS548B22 device is available in 7 mm × 5 mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

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Technical documentation

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Type Title Date
* Datasheet TPS548B22 1.5-V to 18-V VIN, 4.5-V to 22-V VDD, 25-A SWIFT™ Synchronous Step-Down Converter With Full Differential Sense datasheet (Rev. A) Jul. 07, 2017
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
White papers Power solution options for data center applications (Rev. A) Feb. 27, 2020
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Non-isolated point-of-load solutions for VR13.HC in rack server & datacenter app Mar. 05, 2019
Application notes Using DC/DC Controllers to Improve Bitcoin Miner Designs Mar. 15, 2018
Technical articles Powering FPGAs - What to consider with Xilinx UltraScale+ FPGAs Jan. 29, 2018
Technical articles Comparing Bode plots in D-CAP3™ control mode May 24, 2017
Application notes Calculating Output Capacitance to Meet Transient and Ripple Requirements May 02, 2017
Application notes Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan. 25, 2017
User guides TPS548B22EVM-847, 25-A Single Synchronous Step-Down Converter Nov. 29, 2016

Design & development

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Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description
The TPS548B22EVM-PWR784 evaluation module (EVM) uses the TPS548B22. The TPS548B22 is a D-CAP3™ mode, 25A synchronous Buck converter with integrated MOSFETs. It provides a fixed 1.0V output at up to 25A from a 12V input bus.
Features
  • 25A DC Steady State Output Current
  • ±0.5% 0.9VREF Tolerance Over -40 to 150°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop to Support Large Bulk Cap and/or Small MLCCs Without External Compensation
  • Eco-Mode and FCCM Selectable
  • Temp Compensated and Programmable Current (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SLUM577.ZIP (154 KB) - PSpice Model
SIMULATION MODELS Download
SLUM746.ZIP (488 KB) - SIMPLIS Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
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Package Pins Download
LQFN-CLIP (RVF) 40 View options

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